starmath/source/utility.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <strings.hrc>
  21 #include <smmod.hxx>
  22 #include <utility.hxx>
  23 #include <dialog.hxx>
  24 #include <view.hxx>
  25
  26 #include <comphelper/lok.hxx>
  27 #include <sfx2/lokcomponenthelpers.hxx>
  28
  29 // return pointer to active SmViewShell, if this is not possible
  30 // return 0 instead.
  31 //!! Since this method is based on the current focus it is somewhat
  32 //!! unreliable and may return unexpected 0 pointers!
  33 SmViewShell * SmGetActiveView()
  34 {
  35     SfxViewShell *pView = SfxViewShell::Current();
  36     SmViewShell* pSmView = dynamic_cast<SmViewShell*>(pView);
  37     if (!pSmView && comphelper::LibreOfficeKit::isActive())
  38     {
  39         auto* pWindow = static_cast<SmGraphicWindow*>(LokStarMathHelper(pView).GetGraphicWindow());
  40         if (pWindow)
  41             pSmView = &pWindow->GetGraphicWidget().GetView();
  42     }
  43     return pSmView;
  44 }
  45
  46
  47 /**************************************************************************/
  48
  49 void SmFontPickList::Clear()
  50 {
  51     aFontVec.clear();
  52 }
  53
  54 SmFontPickList& SmFontPickList::operator = (const SmFontPickList& rList)
  55 {
  56     Clear();
  57     nMaxItems = rList.nMaxItems;
  58     aFontVec = rList.aFontVec;
  59
  60     return *this;
  61 }
  62
  63 vcl::Font SmFontPickList::Get(sal_uInt16 nPos) const
  64 {
  65     return nPos < aFontVec.size() ? aFontVec[nPos] : vcl::Font();
  66 }
  67
  68 namespace {
  69
  70 bool lcl_CompareItem(const vcl::Font & rFirstFont, const vcl::Font & rSecondFont)
  71 {
  72   return rFirstFont.GetFamilyName() == rSecondFont.GetFamilyName() &&
  73          rFirstFont.GetFamilyType() == rSecondFont.GetFamilyType() &&
  74          rFirstFont.GetCharSet()    == rSecondFont.GetCharSet()    &&
  75          rFirstFont.GetWeight()     == rSecondFont.GetWeight()     &&
  76          rFirstFont.GetItalic()     == rSecondFont.GetItalic();
  77 }
  78
  79 OUString lcl_GetStringItem(const vcl::Font &rFont)
  80 {
  81     OUStringBuffer aString(rFont.GetFamilyName());
  82
  83     if (IsItalic( rFont ))
  84     {
  85         aString.append(", " + SmResId(RID_FONTITALIC));
  86     }
  87     if (IsBold( rFont ))
  88     {
  89         aString.append(", " + SmResId(RID_FONTBOLD));
  90     }
  91
  92     return aString.makeStringAndClear();
  93 }
  94
  95 }
  96
  97 void SmFontPickList::Insert(const vcl::Font &rFont)
  98 {
  99     for (size_t nPos = 0; nPos < aFontVec.size(); nPos++)
 100         if (lcl_CompareItem( aFontVec[nPos], rFont))
 101         {
 102             aFontVec.erase( aFontVec.begin() + nPos );
 103             break;
 104         }
 105
 106     aFontVec.push_front( rFont );
 107
 108     if (aFontVec.size() > nMaxItems)
 109     {
 110         aFontVec.pop_back();
 111     }
 112 }
 113
 114 void SmFontPickList::ReadFrom(const SmFontDialog& rDialog)
 115 {
 116     Insert(rDialog.GetFont());
 117 }
 118
 119 void SmFontPickList::WriteTo(SmFontDialog& rDialog) const
 120 {
 121     rDialog.SetFont(Get());
 122 }
 123
 124
 125 /**************************************************************************/
 126
 127 SmFontPickListBox::SmFontPickListBox(std::unique_ptr<weld::ComboBox> pWidget)
 128     : SmFontPickList(4)
 129     , m_xWidget(std::move(pWidget))
 130 {
 131     m_xWidget->connect_changed(LINK(this, SmFontPickListBox, SelectHdl));
 132 }
 133
 134 IMPL_LINK_NOARG(SmFontPickListBox, SelectHdl, weld::ComboBox&, void)
 135 {
 136     const int nPos = m_xWidget->get_active();
 137     if (nPos != 0)
 138     {
 139         SmFontPickList::Insert(Get(nPos));
 140         OUString aString = m_xWidget->get_text(nPos);
 141         m_xWidget->remove(nPos);
 142         m_xWidget->insert_text(0, aString);
 143     }
 144
 145     m_xWidget->set_active(0);
 146 }
 147
 148 SmFontPickListBox& SmFontPickListBox::operator=(const SmFontPickList& rList)
 149 {
 150     *static_cast<SmFontPickList *>(this) = rList;
 151
 152     for (decltype(aFontVec)::size_type nPos = 0; nPos < aFontVec.size(); nPos++)
 153         m_xWidget->insert_text(nPos, lcl_GetStringItem(aFontVec[nPos]));
 154
 155     if (!aFontVec.empty())
 156         m_xWidget->set_active_text(lcl_GetStringItem(aFontVec.front()));
 157
 158     return *this;
 159 }
 160
 161 void SmFontPickListBox::Insert(const vcl::Font &rFont)
 162 {
 163     SmFontPickList::Insert(rFont);
 164
 165     OUString aEntry(lcl_GetStringItem(aFontVec.front()));
 166     int nPos = m_xWidget->find_text(aEntry);
 167     if (nPos != -1)
 168         m_xWidget->remove(nPos);
 169     m_xWidget->insert_text(0, aEntry);
 170     m_xWidget->set_active(0);
 171
 172     while (m_xWidget->get_count() > nMaxItems)
 173         m_xWidget->remove(m_xWidget->get_count() - 1);
 174 }
 175
 176 bool IsItalic( const vcl::Font &rFont )
 177 {
 178     FontItalic eItalic = rFont.GetItalic();
 179     // the code below leaves only _NONE and _DONTKNOW as not italic
 180     return eItalic == ITALIC_OBLIQUE  ||  eItalic == ITALIC_NORMAL;
 181 }
 182
 183
 184 bool IsBold( const vcl::Font &rFont )
 185 {
 186     FontWeight eWeight = rFont.GetWeight();
 187     return eWeight > WEIGHT_NORMAL;
 188 }
 189
 190
 191 void SmFace::Impl_Init()
 192 {
 193     SetSize( GetFontSize() );
 194     SetTransparent( true );
 195     SetAlignment( ALIGN_BASELINE );
 196     SetColor( COL_AUTO );
 197 }
 198
 199 void SmFace::SetSize(const Size& rSize)
 200 {
 201     Size  aSize (rSize);
 202
 203     // check the requested size against minimum value
 204     const int nMinVal = o3tl::convert(2, o3tl::Length::pt, SmO3tlLengthUnit());
 205
 206     if (aSize.Height() < nMinVal)
 207         aSize.setHeight( nMinVal );
 208
 209     //! we don't force a maximum value here because this may prevent eg the
 210     //! parentheses in "left ( ... right )" from matching up with large
 211     //! bodies (eg stack{...} with many entries).
 212     //! Of course this is holds only if characters are used and not polygons.
 213
 214     Font::SetFontSize(aSize);
 215 }
 216
 217
 218 tools::Long SmFace::GetBorderWidth() const
 219 {
 220     if (nBorderWidth < 0)
 221         return GetDefaultBorderWidth();
 222     else
 223         return nBorderWidth;
 224 }
 225
 226 SmFace & SmFace::operator = (const SmFace &rFace)
 227 {
 228     Font::operator = (rFace);
 229     nBorderWidth = -1;
 230     return *this;
 231 }
 232
 233
 234 SmFace & operator *= (SmFace &rFace, const Fraction &rFrac)
 235     // scales the width and height of 'rFace' by 'rFrac' and returns a
 236     // reference to 'rFace'.
 237     // It's main use is to make scaling fonts look easier.
 238 {   const Size &rFaceSize = rFace.GetFontSize();
 239
 240     rFace.SetSize(Size(tools::Long(rFaceSize.Width() * rFrac),
 241                        tools::Long(rFaceSize.Height() * rFrac)));
 242     return rFace;
 243 }
 244
 245 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */